The year 1816 was 202 years ago.
1816 was a leap year, it had 366 days.
It began with a Monday and ended with a Tuesday.
It was in the 19. century.
ISO 8601: The first calender week of the year began on Monday, January the 1. This year had 52 calendar weeks.

Calendar for the year 1816.
The perpetual calendar can display all dates between 1800 and 2400.